As a Roblox developer, it is currently too hard to expand or collapse all selected hierarchy in the Explorer window.
Currently, you have to use “Select children” to expand all objects, and you have to cut + paste in the same parent to collapse all objects. This is not always practical, like if you need to collapse everything in the workspace.
I often need to reparent an object from workspace to a different model. If the model is at the top of the explorer window and the part is in the bottom of the explorer window, you have to click and drag it to the top and wait for a long time while the explorer window slowly scrolls up to where you need.
Cutting and pasting is not always an option because it will snap the object to the next available Y position.
Collapsing all the objects in the workspace would make it much easier to then drag a shorter distance.
(Also maybe a “jump to top” feature or something that appears when you are dragging an object in the explorer window would be nice to quickly get to the top)